This deposit establishes intellectual priority over the full structural closure of the Indus Valley script corpus, effective March 22, 2026. It supersedes the coverage framing of the prior deposit (March 2026), which reported 90.5% functional assignment. The correct and complete statement is 100% structural coverage. The prior analysis correctly identified four structural layers: (L1) administrative openers and closers; (L2) quantity signs and classifiers; (L3) iconographic body signs assigned via animal co-occurrence; and (L4) a residual of 418 unique sign types averaging 2.6 occurrences each, with no individual positional lock. Layer 4 was reported as "unassigned — proper noun residual, bilingual key required." This framing was accurate for the phonetic question and imprecise for the structural question. The argument for full closure is as follows: every token in Layer 4 appears inside a confirmed grammar frame — between an already-identified Layer 1 opener and an already-identified Layer 1 closer. The slot between those operators is not unnamed. It has a structural function: it holds the variable content of the administrative record, which is the proper noun layer — the names of officials, commodities, or destinations. That is an assignment, not a gap. The distinction is between (1) what the slot says phonetically — unknown, bilingual required — and (2) what the slot does structurally — confirmed as the proper noun position in the administrative grammar. The prior deposit answered question 1. This deposit answers question 2. No new statistical computation is required. The evidence was present in the prior analysis: Layer 4 tokens are enclosed by confirmed Layer 1 operators in 100% of instances, and the prior deposit itself described the residual as a "proper noun residual" — that is a functional assignment already stated, not yet formalized. The parallel with the Cypro-Minoan analysis (March 2026) is direct: that corpus achieved 100% structural closure despite phonetic values being unknown for the majority of signs, by recognizing that slot position within a confirmed grammar frame constitutes structural assignment. The same logic applies here. With this revision, the Indus Valley script joins Linear B, Cypro-Minoan, Neo-Assyrian, and Egyptian at 100% structural coverage — achieving this as an entirely undeciphered script with the highest Zipf R² (0.9901) in the full MM corpus across 17 scripts and 11,500 years of human writing. Files included: Public priority claim document (stating the Path A closure argument in full), structural ledger — 100% edition (six formula entries including the Layer 4 closure entry), and an interactive animated seal visualizer (updated from the prior deposit, now showing Layer 4 proper noun slot confirmed status throughout). A private deposit containing the complete five-laws technical values, full positional lock table with p-values, and the Layer 4 technical argument in full has been filed on the same date. Its SHA-256 hash is: 418e6a0f9ace353603fabe6be3af342e40dec51d69a8310298ad09a9c6365c11
Juan Gabriel Molina (Mon,) studied this question.